ASTROSAT CZTI

Data Quality Report

Orbit 34670

Creation date: 2022-02-25T22:04:20.007259
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_065T06_9000004958_34670cztM0_level2.evt modeM0/AS1A11_065T06_9000004958_34670cztM0_level2_quad_clean.evt
Size (bytes)617,731,20075,052,800
Size589.1 MB 71.6 MB
Events in quadrant A6,122,457451,431
Events in quadrant B3,827,195515,612
Events in quadrant C2,847,161510,470
Events in quadrant D5,571,082441,227

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214753
B0145222
C0112492
D0202092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5032117823.410175%
B50324007.949126%
C5032420.834658%
D503260111.943561%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 9248 5034 951 951 10.28% 18.89%
B 9248 5034 247 247 2.67% 4.91%
C 9248 5034 27 27 0.29% 0.54%
D 9248 5033 513 513 5.55% 10.19%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 169 3756505 31659.78 589 580 118.6
A 10 83 45270 376.7 589 580 118.6
A 7 48 21016 172.26 589 580 118.6
B 5 172 690706 5971.1 612 599 115.6
B 5 255 460991 3983.51 612 599 115.6
B 10 245 148331 1278.24 612 599 115.6
C 15 214 213557 1507.6 608 613 141.2
C 0 10 131864 929.23 608 613 141.2
C 14 67 82619 580.58 608 613 141.2
D 8 195 1462047 10335.35 577 562 141.4
D 12 233 1081506 7644.24 577 562 141.4
D 2 249 347257 2451.76 577 562 141.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter